US PATENT SUBCLASS 348 / 674
.~.~ Nonlinear amplitude modification (e.g., gamma)

Current as of: June, 1999
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348 /   HD   TELEVISION

571  DF  IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION {34}
671  DF  .~ Gray scale transformation {5}
674.~.~ Nonlinear amplitude modification (e.g., gamma) {3}
675  DF  .~.~.~> Color television
676  DF  .~.~.~> By adding outputs from parallel channels
677  DF  .~.~.~> With specified DC level control

DEFINITION

Classification: 348/674

Nonlinear amplitude modification (e.g., gamma):

(under subclass 671) Subject matter including means for modifying the magnitude of a TV signal based on a nonlinear gain function.